No, but must be collected at Parnassus location. Contact Hematology Lab at 415-353-1747 to receive special collection kit. For Neurointerventional radiology only.
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
Synonyms
Aspirin Reaction
Sample Type
Citrated and EDTA anticoagulated whole blood
Collect
1. Greiner partial fill discard
2. Greiner partial fill 3.2% Sodium citrate blue top
3. Lavender EDTA tube
Amount to Collect
8 mL
Preferred Volume
8 mL
Minimum Volume
6 mL
Remarks
Contact Hematology at 415-353-1747 for collection kits. DO NOT collect any specimens before 0800 or after 1500 from Monday to Friday; before 0800 or after 1500 on Saturday and Sunday.
1. Whole blood samples must be collected in or immediately transferred to Greiner 2.0 mL partial fill blue top tubes containing 3.2% Sodium Citrate. The tube must be filled to its intended whole blood capacity (indicated by small black line).
2. Whole blood may be collected from venous sites using a 21 gauge or larger needle in an appropriate blood collection tube.
3. Blood samples should be obtained from an extremity free of peripheral venous infusions.
4. Collect a discard tube first (approximately 2 mL), Greiner partial fill blue tops 2nd, and a lavender for CBC last.
5. Gently invert the sample tube at least 5 times to ensure complete mixing of the contents.
6. Blood must set a minimum of 30 minutes after collection before testing but no longer than 4 hours.
Samples cannot be pneumatic tubed.
Stability (from collection to initiation)
4 hours
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Test Code
ARU
Performing Lab
Hematology, Parnassus
Specimen Preparation
Deliver immediately to Hematology
Additional Processing Instructions
An ARU will be ordered in computer. If no CBC or CBCD is requested, Central Processing will order a hematocrit (HCT) and platelet count (PLT).
Preferred Volume
8 mL
Minimum Volume
6 mL
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Stability (from collection to initiation)
4 hours
Units
ARU
Reference Interval
620 - 672
Additional Information
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
CPT Codes
85576
LOINC Codes
49011-0
Approval Required
No, but must be collected at Parnassus location. Contact Hematology Lab at 415-353-1747 to receive special collection kit. For Neurointerventional radiology only.
Contact Hematology at 415-353-1747 for collection kits. DO NOT collect any specimens before 0800 or after 1500 from Monday to Friday; before 0800 or after 1500 on Saturday and Sunday.
1. Whole blood samples must be collected in or immediately transferred to Greiner 2.0 mL partial fill blue top tubes containing 3.2% Sodium Citrate. The tube must be filled to its intended whole blood capacity (indicated by small black line).
2. Whole blood may be collected from venous sites using a 21 gauge or larger needle in an appropriate blood collection tube.
3. Blood samples should be obtained from an extremity free of peripheral venous infusions.
4. Collect a discard tube first (approximately 2 mL), Greiner partial fill blue tops 2nd, and a lavender for CBC last.
5. Gently invert the sample tube at least 5 times to ensure complete mixing of the contents.
6. Blood must set a minimum of 30 minutes after collection before testing but no longer than 4 hours.
Samples cannot be pneumatic tubed.
Collect
1. Greiner partial fill discard
2. Greiner partial fill 3.2% Sodium citrate blue top
3. Lavender EDTA tube
Amount to Collect
8 mL
Sample Type
Citrated and EDTA anticoagulated whole blood
Preferred Volume
8 mL
Minimum Volume
6 mL
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Specimen Preparation
Deliver immediately to Hematology
Additional Processing Instructions
An ARU will be ordered in computer. If no CBC or CBCD is requested, Central Processing will order a hematocrit (HCT) and platelet count (PLT).
Units
ARU
Reference Interval
620 - 672
Synonyms
Aspirin Reaction
Stability (from collection to initiation)
4 hours
Reported
4 hours
Additional Information
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
CPT Codes
85576
LOINC Codes
49011-0
Ordering
Approval Required
No, but must be collected at Parnassus location. Contact Hematology Lab at 415-353-1747 to receive special collection kit. For Neurointerventional radiology only.
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
Synonyms
Aspirin Reaction
Collection
Sample Type
Citrated and EDTA anticoagulated whole blood
Collect
1. Greiner partial fill discard
2. Greiner partial fill 3.2% Sodium citrate blue top
3. Lavender EDTA tube
Amount to Collect
8 mL
Preferred Volume
8 mL
Minimum Volume
6 mL
Remarks
Contact Hematology at 415-353-1747 for collection kits. DO NOT collect any specimens before 0800 or after 1500 from Monday to Friday; before 0800 or after 1500 on Saturday and Sunday.
1. Whole blood samples must be collected in or immediately transferred to Greiner 2.0 mL partial fill blue top tubes containing 3.2% Sodium Citrate. The tube must be filled to its intended whole blood capacity (indicated by small black line).
2. Whole blood may be collected from venous sites using a 21 gauge or larger needle in an appropriate blood collection tube.
3. Blood samples should be obtained from an extremity free of peripheral venous infusions.
4. Collect a discard tube first (approximately 2 mL), Greiner partial fill blue tops 2nd, and a lavender for CBC last.
5. Gently invert the sample tube at least 5 times to ensure complete mixing of the contents.
6. Blood must set a minimum of 30 minutes after collection before testing but no longer than 4 hours.
Samples cannot be pneumatic tubed.
Stability (from collection to initiation)
4 hours
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Processing
Test Code
ARU
Performing Lab
Hematology, Parnassus
Specimen Preparation
Deliver immediately to Hematology
Additional Processing Instructions
An ARU will be ordered in computer. If no CBC or CBCD is requested, Central Processing will order a hematocrit (HCT) and platelet count (PLT).
Preferred Volume
8 mL
Minimum Volume
6 mL
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Stability (from collection to initiation)
4 hours
Result Interpretation
Units
ARU
Reference Interval
620 - 672
Additional Information
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
Administrative
CPT Codes
85576
LOINC Codes
49011-0
Complete View
Approval Required
No, but must be collected at Parnassus location. Contact Hematology Lab at 415-353-1747 to receive special collection kit. For Neurointerventional radiology only.
Contact Hematology at 415-353-1747 for collection kits. DO NOT collect any specimens before 0800 or after 1500 from Monday to Friday; before 0800 or after 1500 on Saturday and Sunday.
1. Whole blood samples must be collected in or immediately transferred to Greiner 2.0 mL partial fill blue top tubes containing 3.2% Sodium Citrate. The tube must be filled to its intended whole blood capacity (indicated by small black line).
2. Whole blood may be collected from venous sites using a 21 gauge or larger needle in an appropriate blood collection tube.
3. Blood samples should be obtained from an extremity free of peripheral venous infusions.
4. Collect a discard tube first (approximately 2 mL), Greiner partial fill blue tops 2nd, and a lavender for CBC last.
5. Gently invert the sample tube at least 5 times to ensure complete mixing of the contents.
6. Blood must set a minimum of 30 minutes after collection before testing but no longer than 4 hours.
Samples cannot be pneumatic tubed.
Collect
1. Greiner partial fill discard
2. Greiner partial fill 3.2% Sodium citrate blue top
3. Lavender EDTA tube
Amount to Collect
8 mL
Sample Type
Citrated and EDTA anticoagulated whole blood
Preferred Volume
8 mL
Minimum Volume
6 mL
Unacceptable Conditions
Clotted samples or if stability period exceeded.
Incorrect tube type and/or no discard tube received.
Patients with Hct's < 33% and/or Plt's < 119
Specimen Preparation
Deliver immediately to Hematology
Additional Processing Instructions
An ARU will be ordered in computer. If no CBC or CBCD is requested, Central Processing will order a hematocrit (HCT) and platelet count (PLT).
Units
ARU
Reference Interval
620 - 672
Synonyms
Aspirin Reaction
Stability (from collection to initiation)
4 hours
Reported
4 hours
Additional Information
The VerifyNow Aspirin Test is designed to measure aspirin's expected antiplatelet effect.
Plavix®, Ticlid®, and Effient® are commonly prescribed in conjunction with aspirin. While infrequent, these agents may cause a reduction of ARU in some patients.
Test performance was not affected by hematocrit values between 29-56%, platelet count values of >= 92,000/µL or moderate to extensive blood hemolysis induced by physical manipulation. Based on an in-house study performed on 3/29/16, correlation showed that as platelet count increased, ARU results increased.
According to manufacturer:
≥ 550 ARU - Platelet dysfunction consistent with aspirin has not been detected
< 550 ARU - Platelet dysfunction consistent with aspirin has been detected
Results should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
